Okay guys I skimmed through the topics and found no one has yet pointed out this link:

http://www.massive.se/gcdownload/

It's the official download site for GC1 related stuffs: A mission editor (failed to start on Win7, bummer), dedicated server, modding tools and the (excellent) soundtracks. Didn't try the map add-ons.

thank you, very helpful

Link appears to be no longer functional. Could GOG offer the soundtrack as a bonus? I got it from the mentioned site a few years ago, and can only recommend it.

Yes it is, massive no longer holds the tittle of ground control series and decided to shut down that page without much notice, good news is that if you go here : http://www.gcvets.wordpress.com you might get luck in find what you need, drop us a msg at our forums too...

regards.